Pitch changing structure of high-speed transverse sealing device of packaging machine

Abstract

The utility model belongs to the field of packaging machines, and provides a packaging machine high-speed transverse sealing device variable pitch structure which comprises a wall plate, a transverse sealing assembly and an adjusting assembly. The transverse sealing assembly comprises a first memorial archway fixedly connected to the wall plate and a second memorial archway slidably connected to the wall plate, and further comprises a first driving gear rotationally installed on the first memorial archway and a second driving gear rotationally installed on the second memorial archway. The adjusting assembly comprises a driving synchronizing wheel coaxially connected to the second driving gear and a driven synchronizing wheel coaxially connected to the first driving gear. The movable plate is connected to the wall plate in a sliding mode, the two tensioning wheels are rotatably installed on the movable plate in a spaced mode, the two transition wheels are rotatably installed on the first memorial archway in a spaced mode, the synchronous belt is connected with the tensioning wheels and the transition wheels, and the sliding direction of the movable plate relative to the wall plate is parallel to the sliding direction of the second memorial archway relative to the wall plate.

Description

Technical Field

[0001] The present application belongs to the field of packaging machines, and in particular to a variable pitch structure of a high-speed horizontal sealing device of a packaging machine. Background Art

[0002] Traditional packaging machines are usually designed with one or a limited number of transverse sealing mechanisms, which are driven by fixed transmission systems (such as chains, gears, etc.) to achieve the sealing operation of packaging bags. However, with the continuous improvement of market requirements for packaging speed, air tightness and heat sealing firmness, a single transverse sealing mechanism can no longer meet the needs of efficient production. Therefore, some manufacturers have tried to add a second set of transverse sealing devices to the packaging machine in order to improve the overall sealing efficiency by working in parallel. However, this design has encountered a bottleneck in the transmission structure in practical applications. Specifically, the spacing between the two sets of transverse sealing devices is often determined by fixed transmission structures (such as transmission shafts, gear boxes, etc.), which define the relative positions between the transverse sealing devices at the beginning of the design. When the spacing needs to be adjusted to accommodate packaging bags of different specifications or thicknesses, the traditional transmission structure often cannot provide sufficient flexibility. Therefore, it is necessary to solve the above technical problems. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a variable distance structure of a high-speed transverse sealing device of a packaging machine to solve the technical problem in the prior art that the distance between two sets of transverse sealing devices cannot be adjusted.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide a variable pitch structure of a high-speed horizontal sealing device of a packaging machine, comprising:

[0005] Wall panels;

[0006] A transverse sealing assembly, comprising a first archway fixedly connected to the wallboard and a second archway slidably connected to the wallboard, and further comprising a first driving gear rotatably mounted on the first archway and a second driving gear rotatably mounted on the second archway;

[0007] The adjusting component includes an active synchronous wheel coaxially connected to the second active gear and a passive synchronous wheel coaxially connected to the first active gear, and also includes a movable plate slidably connected to the wall panel, two tensioning wheels installed on the movable plate for interval rotation, two transition wheels installed on the first arch for interval rotation, and a synchronous belt connecting the tensioning wheels and the transition wheels, wherein the sliding direction of the movable plate relative to the wall panel is parallel to the sliding direction of the second arch relative to the wall panel, the tensioning wheel and the transition wheel are arranged on the inner side of the synchronous belt and are used to support the synchronous belt, the synchronous belt also passes through the active synchronous wheel and the passive synchronous wheel respectively and is used to drive the active synchronous wheel and the passive synchronous wheel to rotate, the active synchronous wheel and the passive synchronous wheel are both located on the outer side of the synchronous belt and can make the synchronous belt concave toward its own center when passing through the active synchronous wheel and the passive synchronous wheel.

[0008] Optionally, the adjustment assembly further comprises an active rack connected to the second arch, a passive rack connected to the movable plate, and a first intermediate gear and a second intermediate gear connected between the active rack and the passive rack, wherein the active rack is sequentially connected to the passive rack through the first intermediate gear and the second intermediate gear;

[0009] The active rack and the passive rack are both parallel to the sliding direction of the second arch relative to the wall panel.

[0010] Optionally, the first intermediate gear, the second intermediate gear and the passive rack are symmetrically arranged on both sides of the active rack.

[0011] Optionally, the adjustment assembly further includes a fixing plate and a connecting block connected to the fixing plate;

[0012] The fixing plate is connected to the wall plate through the connecting block and is spaced apart from the wall plate. The first intermediate gear and the second intermediate gear are rotatably disposed on the fixing plate and are located between the fixing plate and the wall plate.

[0013] Optionally, the adjustment assembly further comprises a first linear rail mounted on the wall panel, and the movable panel is slidably connected to the first linear rail.

[0014] Optionally, the adjustment assembly further includes a bottom plate connected to the wall plate, a connecting plate connected to the second archway, an adjustment motor mounted on the bottom plate, a screw connected to an output end of the adjustment motor, and a nut threadedly connected to the screw;

[0015] The nut is connected to the connecting plate, and the lead screw is parallel to the first linear rail.

[0016] Optionally, the adjustment assembly further comprises a second linear rail mounted on the base plate and parallel to the lead screw, and the connecting plate is slidably connected to the second linear rail.

[0017] Optionally, the transverse sealing assembly further comprises a driving motor mounted on the second archway and an input gear and a second driven gear respectively forming a gear pair with the second driving gear;

[0018] The input gear is connected to the power end of the driving motor and is driven by the driving motor.

[0019] Optionally, the transverse sealing assembly further comprises a transmission gear and a first passive gear which are rotatably mounted on the first arch and form a gear pair with the first driving gear;

[0020] The input gear is coaxially connected with a first transmission shaft, and the transmission gear is coaxially connected with a second transmission shaft.

[0021] Optionally, the transverse sealing assembly further includes a passive support shaft for supporting the first passive gear, and the two transition wheels are respectively mounted on the passive support shaft and the second transmission shaft and are capable of rotating around the passive support shaft and the second transmission shaft.

[0022] The beneficial effect of the variable pitch structure of the high-speed horizontal sealing device of the packaging machine provided by the present application is that compared with the prior art, in the variable pitch structure of the high-speed horizontal sealing device of the packaging machine provided by the present application, when the second arch slides relative to the wall panel and moves away from the first arch, the distance between the first driving gear and the second driving gear will increase, and the active synchronous wheel will also move away from the passive synchronous wheel in the process and gradually lose support for the synchronous belt. Since the movable plate can slide in the same direction as the second arch, the distance between the tensioning wheel installed on the movable plate and the transition wheel installed on the first arch can be increased. Therefore, the synchronous belt that would have become loose after losing the support of the active synchronous wheel can continue to remain tensioned due to the increase in the distance between the tensioning wheel and the transition wheel; conversely, when the second arch approaches the first arch and drives the active synchronous wheel to approach the passive synchronous wheel, the movable plate can be moved and the distance between the tensioning wheel and the transition wheel can be reduced, so that the active synchronous wheel can fully approach the passive synchronous wheel while keeping the synchronous belt tensioned. Therefore, in the variable pitch structure of the high-speed transverse sealing device of the packaging machine provided in the present application, the distance between the first driving gear and the second driving gear used to drive the two sets of transverse sealing components to work synchronously can be flexibly adjusted, which is far superior to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 The overall structure diagram of the variable pitch structure of the high-speed horizontal sealing device of the packaging machine provided in the embodiment of the present application Figure 1 ;

[0025] Figure 2 The overall structure diagram of the variable pitch structure of the high-speed horizontal sealing device of the packaging machine provided in the embodiment of the present application Figure 2 .

[0026] Among them, the reference numerals in the figure are: 100, wall panel; 201, first archway; 202, second archway; 203, first driving gear; 204, second driving gear; 205, driving motor; 206, input gear; 207, second passive gear; 208, transmission gear; 209, first passive gear; 210, first transmission shaft; 211, second transmission shaft; 212, passive support shaft; 301, active synchronous wheel; 302 , passive synchronous wheel; 303, movable plate; 304, tensioning wheel; 305, transition wheel; 306, synchronous belt; 307, active rack; 308, passive rack; 309, first intermediate gear; 310, second intermediate gear; 311, fixed plate; 312, connecting block; 313, first linear rail; 314, bottom plate; 315, connecting plate; 316, adjusting motor; 317, lead screw; 318, nut; 319, second linear rail. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] Please also read Figure 1 and Figure 2 Now, a variable pitch structure of a high-speed horizontal sealing device of a packaging machine provided in an embodiment of the present application is described. The variable pitch structure of a high-speed horizontal sealing device of a packaging machine includes a wall panel 100, a horizontal sealing component and an adjustment component. Among them:

[0032] The transverse sealing assembly includes a first arch 201 fixedly connected to the wall panel 100 and a second arch 202 slidably connected to the wall panel 100, and also includes a first driving gear 203 rotatably mounted on the first arch 201 and a second driving gear 204 rotatably mounted on the second arch 202. The adjustment assembly includes a driving synchronous wheel 301 coaxially connected to the second driving gear 204 and a passive synchronous wheel 302 coaxially connected to the first driving gear 203, and also includes a movable plate 303 slidably connected to the wall panel 100, two tensioning wheels 304 rotatably mounted on the movable plate 303 at intervals, two transition wheels 305 rotatably mounted on the first arch 201 at intervals, and a synchronous belt 306 connecting the tensioning wheels 304 and the transition wheels 305, and the sliding direction of the movable plate 303 relative to the wall panel 100 is parallel to the second arch. 202 relative to the sliding direction of the wall panel 100, the tensioning wheel 304 and the transition wheel 305 are arranged on the inner side of the synchronous belt 306 and are used to support the synchronous belt 306, and the synchronous belt 306 also passes through the active synchronous wheel 301 and the passive synchronous wheel 302 respectively and is used to drive the active synchronous wheel 301 and the passive synchronous wheel 302 to rotate, and the active synchronous wheel 301 and the passive synchronous wheel 302 are both located on the outer side of the synchronous belt 306 and can make the synchronous belt 306 concave toward its own center when passing through the active synchronous wheel 301 and the passive synchronous wheel 302. In this embodiment, the first driving gear 203 and the second driving gear 204 can be used to drive two sets of transverse sealing devices respectively.

[0033] According to the above structure provided in the present embodiment, the first arch 201 and the second arch 202 are respectively installed with a set of transverse sealing devices, and the first driving gear 203 rotatably installed on the first arch 201 and the second driving gear 204 rotatably installed on the second arch 202 can respectively maintain a good synchronous transmission relationship through the passive synchronous wheel 302 and the active synchronous wheel 301 coaxially connected to themselves and the synchronous belt 306 connected between the passive synchronous wheel 302 and the active synchronous wheel 301, and are used to drive the two sets of transverse sealing devices to operate synchronously to meet the industry's requirements for high-speed heat sealing. When the second archway 202 slides relative to the wallboard 100 and moves away from the first archway 201, the distance between the first driving gear 203 and the second driving gear 204 will increase. Therefore, the active synchronous wheel 301 will also move away from the passive synchronous wheel 302 in the process and gradually lose support for the synchronous belt 306. Since the movable plate 303 can slide in the same direction as the second archway 202, the distance between the tensioning wheel 304 installed on the movable plate 303 and the transition wheel 305 installed on the first archway 201 can be increased. Therefore, the synchronous belt 306, which would have become loose after losing the support of the active synchronous wheel 301, can continue to be tensioned due to the increase in the distance between the tensioning wheel 304 and the transition wheel 305.

[0034] On the contrary, when the active synchronous wheel 301 approaches the passive synchronous wheel 302, the distance between the tension wheel 304 and the transition wheel 305 can be reduced by moving the movable plate 303, so that the active synchronous wheel 301 can have a sufficient moving range under the premise of keeping the synchronous belt 306 tensioned. Therefore, in the variable pitch structure of the high-speed horizontal sealing device of the packaging machine provided in this embodiment, even if the distance between the active synchronous wheel 301 and the passive synchronous wheel 302 changes, the synchronous belt 306 can always be in a tensioned state to maintain a stable synchronous transmission relationship between the active synchronous wheel 301 and the passive synchronous wheel 302, and the two sets of horizontal sealing components can also achieve the adjustment of the spacing on the basis of maintaining a good stable transmission relationship, which is far superior to the existing technology.

[0035] In another embodiment of the present application, please refer to Figure 1 and Figure 2 The adjustment component also includes an active rack 307 connected to the second arch 202, a passive rack 308 connected to the movable plate 303, and a first intermediate gear 309 and a second intermediate gear 310 connected between the active rack 307 and the passive rack 308. The active rack 307 is sequentially connected to the passive rack 308 through the first intermediate gear 309 and the second intermediate gear. The active rack 307 and the passive rack 308 are parallel to the sliding direction of the second arch 202 relative to the wall panel 100.

[0036] According to the above structure provided in the present embodiment, when the second arch 202 moves, the active rack 307 connected to the second arch 202 can drive the passive rack 308 through the first intermediate gear 309 and the second intermediate gear 310. Since the passive rack 308 is connected to the movable plate 303 and two gears are arranged between the passive rack 308 and the active rack 307, when the second arch 202 moves, the movable plate 303 connected to the passive rack 308 can be driven by the second arch 202 and achieve the technical effect of moving in the same direction as the second arch 202. In this way, the distance adjustment between the tensioning wheel 304 and the transition wheel 305 can be better linked to the spacing adjustment between the active synchronous wheel 301 and the passive synchronous wheel 302, which is beneficial to further improve the adjustment stability of the variable pitch structure of the high-speed horizontal sealing device of the packaging machine in the present embodiment.

[0037] In another embodiment of the present application, please refer to Figure 1 and Figure 2 , the first intermediate gear 309, the second intermediate gear 310 and the passive rack 308 are symmetrically arranged on both sides of the active rack 307. According to the above structure provided in this embodiment, symmetrically arranging two sets of the first intermediate gear 309, the second intermediate gear 310 and the passive rack 308 on both sides of the active rack 307 can significantly improve the moving stability of the movable plate 303, which is conducive to further improving the adjustment stability of the variable pitch structure of the high-speed horizontal sealing device of the packaging machine in this embodiment.

[0038] In another embodiment of the present application, please refer to Figure 1 and Figure 2 The adjustment assembly further includes a fixing plate 311 and a connection block 312 connected to the fixing plate 311; the fixing plate 311 is connected to the wall plate 100 through the connection block 312 and is spaced apart from the wall plate 100; the first middle gear 309 and the second middle gear 310 are rotatably disposed on the fixing plate 311 and are located between the fixing plate 311 and the wall plate 100. According to the above structure provided in this embodiment, the fixing plate 311 spaced apart from the wall plate 100 by the connection block 312 can significantly improve the installation stability of the first middle gear 309 and the second middle gear 310, which is conducive to further improving the adjustment stability of the variable pitch structure of the high-speed horizontal sealing device of the packaging machine in this embodiment.

[0039] In another embodiment of the present application, please refer to Figure 1 and Figure 2 The adjustment assembly further includes a first linear rail 313 mounted on the wall panel 100, and the movable plate 303 is slidably connected to the first linear rail 313. According to the above structure provided in this embodiment, the first linear rail 313 can significantly improve the moving stability of the movable plate 303, which is conducive to further improving the adjustment stability of the variable pitch structure of the high-speed horizontal sealing device of the packaging machine in this embodiment.

[0040] In another embodiment of the present application, please refer to Figure 1 and Figure 2 , the adjusting assembly further includes a bottom plate 314 connected to the wall plate 100, a connecting plate 315 connected to the second housing 202, an adjusting motor 316 installed on the bottom plate 314, a lead screw 317 connected to the output end of the adjusting motor 316, and a nut 318 threadedly connected to the lead screw 317. The nut 318 is connected to the connecting plate 315, and the lead screw 317 is parallel to the first linear guide 313. According to the above structure provided in this embodiment, the adjusting motor 316 can drive the lead screw 317 to rotate, so that the nut 318 threadedly connected to the lead screw 317 drives the connecting plate 315 and the second housing 202 connected to the connecting plate 315 to move stably, which is beneficial to further improving the adjustment stability of the variable pitch structure of the high-speed transverse sealing device of the packaging machine in this embodiment.

[0041] In another embodiment of the present application, please refer to Figure 1 and Figure 2 , the adjusting assembly further includes a second linear guide 319 installed on the bottom plate 314 and parallel to the lead screw 317. The connecting plate 315 is slidably connected to the second linear guide 319. According to the above structure provided in this embodiment, the second linear guide 319 parallel to the lead screw 317 can further improve the movement stability of the second housing 202, which is beneficial to further improving the adjustment stability of the variable pitch structure of the high-speed transverse sealing device of the packaging machine in this embodiment.

[0042] In another embodiment of the present application, please refer to Figure 1 and Figure 2 , the transverse sealing assembly further includes a driving motor 205 installed on the second housing 202, and an input gear 206 and a second driven gear 207 that respectively form a gear pair with the second driving gear 204. The input gear 206 is connected to the power end of the driving motor 205 and is driven by the driving motor 205. According to the above structure provided in this embodiment, the driving motor 205 installed on the second housing 202 can continuously input power through the input gear 206 and drive the second driving gear 204 and the second driven gear 207 meshing with the second driving gear 204 to rotate stably, which is beneficial to further improving the adjustment stability of the variable pitch structure of the high-speed transverse sealing device of the packaging machine in this embodiment. It can be understood that the second driving gear 204 and the second driven gear 207 in this embodiment can be used to cooperate to drive the upper die and the lower die in a set of transverse sealing devices to approach or move away from each other.

[0043] In another embodiment of the present application, please refer to Figure 1 and Figure 2The transverse sealing assembly also includes a transmission gear 208 and a first passive gear 209 which are respectively rotatably mounted on the first arch 201 and form a gear pair with the first active gear 203. A first transmission shaft 210 is coaxially connected to the input gear 206, and a second transmission shaft 211 is coaxially connected to the transmission gear 208. According to the above structure provided in this embodiment, the first active gear 203 and the first passive gear 209 can be used to cooperate and drive the upper mold and the lower mold in another group of transverse sealing devices to move closer to or away from each other. In addition, the first transmission shaft 210 coaxially connected to the input gear 206 and the second transmission shaft 211 coaxially connected to the transmission gear 208 can be used to transmit power. In this way, the input gear 206 and the transmission gear 208 can be used to drive multiple groups of first active gears 203 and second active gears 204, which is conducive to achieving a more stable driving effect.

[0044] In another embodiment of the present application, please refer to Figure 1 and Figure 2 The transverse seal assembly further includes a passive support shaft 212 for supporting the first passive gear 209, and two transition wheels 305 are respectively mounted on the passive support shaft 212 and the second transmission shaft 211 and can rotate around the passive support shaft 212 and the second transmission shaft 211. According to the above structure provided in this embodiment, the two transition wheels 305 are respectively installed on the passive support shaft 212 and the second transmission shaft 211, which is conducive to avoiding the introduction of redundant support structures and achieving a more stable installation effect of the transition wheels 305.

[0045] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A variable pitch structure of a high-speed horizontal sealing device of a packaging machine, characterized in that: include: Wall Panel (100); A transverse sealing assembly, comprising a first archway (201) fixedly connected to the wallboard (100) and a second archway (202) slidably connected to the wallboard (100), and also comprising a first driving gear (203) rotatably mounted on the first archway (201) and a second driving gear (204) rotatably mounted on the second archway (202); An adjustment assembly comprises an active synchronous wheel (301) coaxially connected to the second active gear (204) and a passive synchronous wheel (302) coaxially connected to the first active gear (203), and also comprises a movable plate (303) slidably connected to the wall panel (100), two tensioning wheels (304) installed on the movable plate (303) in an interval rotational manner, two transition wheels (305) installed on the first archway (201) in an interval rotational manner, and a synchronous belt (306) connecting the tensioning wheels (304) and the transition wheels (305), wherein the sliding direction of the movable plate (303) relative to the wall panel (100) is parallel to the second archway (202). Relative to the sliding direction of the wall panel (100), the tension wheel (304) and the transition wheel (305) are arranged on the inner side of the synchronous belt (306) and are used to support the synchronous belt (306); the synchronous belt (306) also passes through the active synchronous wheel (301) and the passive synchronous wheel (302) respectively and is used to drive the active synchronous wheel (301) and the passive synchronous wheel (302) to rotate; the active synchronous wheel (301) and the passive synchronous wheel are both located on the outer side of the synchronous belt (306) and can cause the synchronous belt (306) to be concave towards its own center when passing through the active synchronous wheel (301) and the passive synchronous wheel (302).

2. The variable pitch structure of the high-speed horizontal sealing device of the packaging machine according to claim 1, characterized in that: The adjustment component also includes an active rack (307) connected to the second archway (202), a passive rack (308) connected to the movable plate (303), and a first intermediate gear (309) and a second intermediate gear (310) connected between the active rack (307) and the passive rack (308); the active rack (307) is transmission-connected to the passive rack (308) via the first intermediate gear (309) and the second intermediate gear in sequence; The active rack (307) and the passive rack (308) are both parallel to the sliding direction of the second archway (202) relative to the wallboard (100).

3. The variable pitch structure of the high-speed horizontal sealing device of the packaging machine according to claim 2, characterized in that: The first intermediate gear (309), the second intermediate gear (310) and the passive rack (308) are symmetrically arranged on both sides of the active rack (307).

4. The variable pitch structure of the high-speed transverse sealing device of the packaging machine according to claim 3, characterized in that: The adjustment assembly further comprises a fixing plate (311) and a connecting block (312) connected to the fixing plate (311); The fixing plate (311) is connected to the wall plate (100) via the connecting block (312) and is spaced apart from the wall plate (100); the first intermediate gear (309) and the second intermediate gear (310) are rotatably disposed on the fixing plate (311) and are located between the fixing plate (311) and the wall plate (100).

5. The variable pitch structure of the high-speed transverse sealing device of the packaging machine according to claim 1, characterized in that: The adjustment assembly further comprises a first linear rail (313) mounted on the wall panel (100), and the movable panel (303) is slidably connected to the first linear rail (313).

6. The variable pitch structure of the high-speed transverse sealing device of the packaging machine according to claim 5, characterized in that: The adjustment assembly further comprises a bottom plate (314) connected to the wall plate (100), a connecting plate (315) connected to the second archway (202), an adjustment motor (316) mounted on the bottom plate (314), a screw rod (317) connected to the output end of the adjustment motor (316), and a nut (318) threadedly connected to the screw rod (317); The nut (318) is connected to the connecting plate (315), and the lead screw (317) is parallel to the first linear rail (313).

7. The variable pitch structure of the high-speed transverse sealing device of the packaging machine according to claim 6, characterized in that: The adjustment assembly further comprises a second linear rail (319) mounted on the base plate (314) and parallel to the lead screw (317), and the connecting plate (315) is slidably connected to the second linear rail (319).

8. The variable pitch structure of the high-speed transverse sealing device of the packaging machine according to claim 1, characterized in that: The transverse sealing assembly further comprises a driving motor (205) mounted on the second archway (202), and an input gear (206) and a second driven gear (207) which respectively form a gear pair with the second driving gear (204); The input gear (206) is connected to the power end of the drive motor (205) and is driven by the drive motor (205).

9. The variable pitch structure of the high-speed transverse sealing device of the packaging machine according to claim 8, characterized in that: The transverse sealing assembly further comprises a transmission gear (208) and a first driven gear (209) which are rotatably mounted on the first arch (201) and form a gear pair with the first driving gear (203); The input gear (206) is coaxially connected to a first transmission shaft (210), and the transmission gear (208) is coaxially connected to a second transmission shaft (211).

10. The variable pitch structure of the high-speed transverse sealing device of the packaging machine according to claim 9, characterized in that: The transverse sealing assembly further comprises a passive support shaft (212) for supporting the first passive gear (209), and the two transition wheels (305) are respectively mounted on the passive support shaft (212) and the second transmission shaft (211) and are capable of rotating around the passive support shaft (212) and the second transmission shaft (211).

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